Add module suffix in .mojom files for components/arc

chrome/gpu/gpu_arc_video_service.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_GPU_GPU_ARC_VIDEO_SERVICE_H_
 #define CHROME_GPU_GPU_ARC_VIDEO_SERVICE_H_
 
 #include <map>
 #include <memory>
 
 #include "base/macros.h"
 #include "components/arc/common/video.mojom.h"
 #include "mojo/public/cpp/bindings/strong_binding.h"
 
 namespace chromeos {
 namespace arc {
 
 // GpuArcVideoService manages life-cycle and IPC message translation for
 // ArcVideoAccelerator.
 //
 // For each creation request from GpuArcVideoServiceHost, GpuArcVideoService
 // will create a new IPC channel.
-class GpuArcVideoService : public ::arc::VideoHost {
+class GpuArcVideoService : public ::arc::mojom::VideoHost {
  public:
   class AcceleratorStub;
 
-  // |request| is mojo interface request of arc::VideoHost.
-  explicit GpuArcVideoService(mojo::InterfaceRequest<::arc::VideoHost> request);
+  // |request| is mojo interface request of arc::mojom::VideoHost.
+  explicit GpuArcVideoService(
+      mojo::InterfaceRequest<::arc::mojom::VideoHost> request);
 
   // Upon deletion, all ArcVideoAccelerator will be deleted and the associated
   // IPC channels are closed.
   ~GpuArcVideoService() override;
 
   // Removes the reference of |stub| (and trigger deletion) from this class.
   void RemoveClient(AcceleratorStub* stub);
 
  private:
-  // arc::VideoHost implementation.
+  // arc::mojom::VideoHost implementation.
   void OnRequestArcVideoAcceleratorChannel(
       const OnRequestArcVideoAcceleratorChannelCallback& callback) override;
 
   base::ThreadChecker thread_checker_;
 
-  // Binding of arc::VideoHost. It also takes ownership of |this|.
-  mojo::StrongBinding<::arc::VideoHost> binding_;
+  // Binding of arc::mojom::VideoHost. It also takes ownership of |this|.
+  mojo::StrongBinding<::arc::mojom::VideoHost> binding_;
 
   // Bookkeeping all accelerator stubs.
   std::map<AcceleratorStub*, std::unique_ptr<AcceleratorStub>>
       accelerator_stubs_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuArcVideoService);
 };
 
 }  // namespace arc
 }  // namespace chromeos
 
 #endif  // CHROME_GPU_GPU_ARC_VIDEO_SERVICE_H_